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Sunny_sXe [5.5K]

3 years ago

8

Select all of the following expressions that are equivalent to 16a+40 .

1 answer:

lina2011 [118]3 years ago

5 0

The first one is true
<span>4(4a+10) is
</span>16 a + 40 after distribution

The second one is also true
<span>2(8a+20)
16a + 40 after distribution

Third is not true
</span><span>4a(4+10a)
</span><span>16a + 40a^2 after distribution

Last one is also true
</span><span>8(2a+5)
16a + 40 after distribution

Hope this helps :)</span>

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If x=5^a, find the value of 5x. How?

Yakvenalex [24]

Answer:

$5x = 5^{(a+1)}$

Step-by-step explanation:

Here is a problem with the concept of properties of the exponent.

We are given $x = 5^{a}$ and we have to find the value of 5x.

Now, $5x = 5 \times 5^{a}$ {Since we are given that $x = 5^{a}$ }

⇒ $5x = 5^{1} \times 5^{a}$ {Since we can write $x = x^{1}$ }

⇒ $5x = 5^{(a+1)}$ {Since we know the formula of exponent as $x^{m} \times x^{n} = x^{(m + n)}$ }

(Answer)

7 0

3 years ago

The ratio of the number of fiction book is 9:4, the different between the number of fiction and non fiction is 245

Evgesh-ka [11]

Answer:

Step-by-step explanation:

The ratio of the number of fiction books is 9:4

the difference between the number of fiction and nonfictionn is 245

so if the number of fiction books = 9x

then the number of nonfiction books = 4x

then difference = 9x-4x = 5x

the difference is given 245

then 5x= 245

x= $\frac{245}{5}$ =49

number of fiction books =49×9=441

number of nonfiction books =49×4=196

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8 0

2 years ago

weqwewe [10]

Answer:

y = 4x -19

Step-by-step explanation:

y = 4x + b

first we add the point to the equation and then we solve for b

-3 = 4 ( 4 ) + b

-3 = 16 + b

-16

-19 = b

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2 years ago

The walls of a square storage room in a warehouse are 300 feet long. What is the distance from one corner to the other corner of

yulyashka [42]

Use Pythagoras theorem. (a^2 + b^2 = c^2)

300^2+300^2 = 180000
√180000 = 424.3

The answer is 424 foot.

Hope this helps.

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